deno-parse-link-header

This is a Deno module for parsing HTTP Link headers.

Yes, there are already a number of Node.js packages for parsing link headers; this module was mostly an excuse for me to try Deno and learn a little about a somewhat obscure HTTP header.

usage

Use in Deno:

import { parseLinkHeader } from "https://cdn.jsdelivr.net/gh/bryik/deno-parse-link-header@v0.1.1/parseLinkHeader.ts";

const example = `<https://example.com>; msg1="preconnect" msg2=hello`;

const parsedLinkHeader = parseLinkHeader(example);

console.log(parsedLinkHeader);
// [{uri: "https://example.com", msg1: "preconnect", msg2: "hello"}]

Use in browser (import the ES Module /dist/parseLinkHeader.bundle.js):

<script type="module">
  import { parseLinkHeader } from "https://cdn.jsdelivr.net/gh/bryik/deno-parse-link-header@v0.1.1/dist/parseLinkHeader.bundle.js";

  const linkHeader = `<https://example.com>; msg1="preconnect" msg2="hello"`;
  console.log(parseLinkHeader(linkHeader));
  // [{uri: "https://example.com", msg1: "preconnect", msg2: "hello"}]
</script>

development

First clone this repo and cd into it. You will need to have deno installed.

installation

deno cache --reload --lock=lock.json ./deps.ts

updating lock file

deno cache --lock=lock.json --lock-write ./deps.ts

running tests

deno test

building /dist

deno bundle ./parseLinkHeader.ts ./dist/parseLinkHeader.bundle.js

resources

• MDN's article on Link headers provides a concise description of what a Link header is.

• thlorenz' parse-link-header node package was a useful reference and I re-used many of his test cases.

• Section 3 of RFC 8288 is the definitive specification for Link headers. It is very dry.